If your trailer is clean, uncluttered, and everything works you'll be above most of the competition. Have it sitting looking 100% ready to go (no grass growing around it). Put it on CL with TONS of big clear pictures. Put a couple normal pics in your CL ad just to make it display with the "pics" icon but also put a link in your ad to all your other pictures on a photo hosting site. List any add ons, extras, and other equipment you're including. Good luck. I personally think you'll be able to sell it for what you need to get out of it.